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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f453241b9438e2df051bbe410079f758577946879b63eb00b8f9546b52b3ecea' 
  AND token = 'sQ/jZqdMGyZH3OyZshkPYVDQcYNiQ2I2D1Kccnp8NHM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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