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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7118a8fac06886ed822df3a67c5f8f3216f317fc3d7234659e61fb763cbeff72' 
  AND token = 'z2eq3SUAtZL8bNKF+z/vZ4iGxAjeDA/aeVcgLZ8sZMk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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