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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e071e93fc1b3b1c4a8b6b0fb4b4c0ab49d3374e3684d627c7eef4fe8b9087b73' 
  AND token = 'wZ1/56AXFixdan2XSzMILGXf0W8pFp7nn+IjDclw33E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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