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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2dd3aa03141911b841f4b82191fab9609575130a032d66fed5e7d0fac84f907a' 
  AND token = 'f7M/bn8LSXi/FIV2ZcyolXEL1+SbEaM9LP+zHgK7zkI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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