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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'faeff07580f913d01b8c8396299250cddf296eb4ac2aefe8aeabf928d4d2ab4a' 
  AND token = 'p0Nf7lLB9pVf+BvCk7KDjlfUubcELtbFPIR/6X3oq7g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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