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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7fa914ddfd205a08e3b115a27e2993b51bca5345a442d6d6573e584332df6fee' 
  AND token = 'zAPX2N2RunoZtImVeNWTLvaOzUhCwp266rxhMi+tXv8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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