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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7053f3d880c2328926fc628253f9f655798fd7aac80a42da20e38452fbc5fb34' 
  AND token = 'kG7DvfcwrrgrcSFofBJNlaaTWYZ58h1TvHyzOnO9YXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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