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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01f3051925c361e12c6dfb6a90aea2e948d3aa762f7f2fa5c30e60da8cc423b1' 
  AND token = 'cPdkWiO7zoAQxyZAzBHmfyYyyiqpRVXl/+i/SU7+lZk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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