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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63f29d335e49a9d1ad7c9cbc01920aa3f89a880308e44e8a6039073c22a2e0ed' 
  AND token = 'iDb8JPVB5O9JoNyuwHDYYgGlvj3OcbT8QeW9Oy8AuIc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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