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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb065e393aaa36f6ba9fd2f4ae02d9a32d0781ae4ce88aec9756657056d49dab' 
  AND token = 'XGWTmz0I9QK9T6kITY21TrrK5y6ewJOImjYNJ3k1XZ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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