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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11a93da0d0d8d0afdf11bf8ca2107f6a73212128e49589c81742a34e98ff54e1' 
  AND token = 'pImBA3miEbgHVjEinx7n2wX5LU+X6pF7H2DdTSs8rhg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00120

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}