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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce0ddc8643d3a5ede5857b419b5a1b9d592eea9c31f6b3f15ddb1d4f42d0f76d' 
  AND token = 'hHfdErzPQgnDPq29t9DBr9kek9px7PS2t3rG3xhaidE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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